16146431 has 6 divisors (see below), whose sum is σ = 18782640. Its totient is φ = 13839756.

The previous prime is 16146421. The next prime is 16146439. The reversal of 16146431 is 13464161.

It is not a de Polignac number, because 16146431 - 2⁶ = 16146367 is a prime.

It is a super-2 number, since 2×16146431² = 521414468075522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16146431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16146439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164711 + ... + 164808.

It is an arithmetic number, because the mean of its divisors is an integer number (3130440).

Almost surely, 2^16146431 is an apocalyptic number.

16146431 is a deficient number, since it is larger than the sum of its proper divisors (2636209).

16146431 is an equidigital number, since it uses as much as digits as its factorization.

16146431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329533 (or 329526 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 16146431 is about 4018.2621865677. The cubic root of 16146431 is about 252.7505913343.

The spelling of 16146431 in words is "sixteen million, one hundred forty-six thousand, four hundred thirty-one".